1304731368 has 128 divisors (see below), whose sum is σ = 4039632000. Its totient is φ = 387763200.

The previous prime is 1304731339. The next prime is 1304731391. The reversal of 1304731368 is 8631374031.

1304731368 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60418 + ... + 79118.

It is an arithmetic number, because the mean of its divisors is an integer number (31559625).

Almost surely, 2^1304731368 is an apocalyptic number.

1304731368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1304731368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2019816000).

1304731368 is an abundant number, since it is smaller than the sum of its proper divisors (2734900632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1304731368 is a wasteful number, since it uses less digits than its factorization.

1304731368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18752 (or 18742 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1304731368 is about 36121.0654327914. The cubic root of 1304731368 is about 1092.7153265091.

It can be divided in two parts, 130473 and 1368, that added together give a triangular number (131841 = T₅₁₃).

The spelling of 1304731368 in words is "one billion, three hundred four million, seven hundred thirty-one thousand, three hundred sixty-eight".